Last reviewed: November 2017
Last updated: November  2017

Summary

Definition

History and exam

Key diagnostic factors

  • cough
  • inspiratory whooping
  • rhinorrhea
  • posttussive vomiting

Other diagnostic factors

  • sneezing
  • absent or low-grade fever
  • decreased appetite
  • apnea

Risk factors

  • age <6 months
  • baby born to mother who became infected at ≥34 weeks gestation
  • no or incomplete immunization
  • school teachers or healthcare workers (transmission)
  • close contact with an infected person, especially a sibling
  • household contact with an infected person

Diagnostic investigations

1st investigations to order

  • culture of a nasopharyngeal aspirate or swab from the posterior nasopharynx
  • PCR of nasopharyngeal aspirate
  • serology
  • CBC
Full details

Investigations to consider

  • direct fluorescent antibody test
Full details

Treatment algorithm

Contributors

Authors VIEW ALL

Senior Research Scientist

Academic Health Center

University of Minnesota

Twin Cities Campus

Minneapolis

MN

Disclosures

MNL declares that she has no competing interests.

Clinical Assistant Professor

Department of Family and Community Medicine

University of Illinois-Chicago

College of Medicine

Chicago

IL

Disclosures

CSA declares that she has no competing interests.

Peer reviewers VIEW ALL

Department of Pediatrics

Hospital of Vestfold

Toensberg

Norway

Disclosures

AFL declares that she has no competing interests.

Pediatric Consultant

Alberta Children's Hospital

University of Calgary

Alberta

Canada

Disclosures

AKCL declares that he has no competing interests.

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